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No username got a reaction from Don Kotlos in Kipon / Baveyes medium format speed booster for full frame Sony A7 series
STAY WELL AWAY. POOR QUALITY and DOESNT work on Wide angle Pentax 645 lenses.
Sooo, I finally bought this after coming across it on a few blogs (here included) and just wanted to post this quick update so that other people don't waste their money.
Upon receiving the adaptor I immediately went about buying a bunch of 645 lenses and was pretty excited by the promise of this adaptor for my A7Rii. HOWEVER, the quality of the optics is pretty poor and as someone mentioned there's a lot of smearing towards the sides of the image.
Then things got worse. When trying to attach my Pentax 645 45mm lens to it I found that it wouldn't even connect to the adaptor. After a lengthy email exchange with the supplier they finally admitted that it DOESN'T ACTUALLY WORK with wide angle Pentax lenses!!!!!!
Guess that might have been a useful thing to have known.
Anyway, now I'm stuck with trying to get my money back.
As the saying goes...'if it looks too good to be true'........
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No username got a reaction from Nikkor in Kipon / Baveyes medium format speed booster for full frame Sony A7 series
STAY WELL AWAY. POOR QUALITY and DOESNT work on Wide angle Pentax 645 lenses.
Sooo, I finally bought this after coming across it on a few blogs (here included) and just wanted to post this quick update so that other people don't waste their money.
Upon receiving the adaptor I immediately went about buying a bunch of 645 lenses and was pretty excited by the promise of this adaptor for my A7Rii. HOWEVER, the quality of the optics is pretty poor and as someone mentioned there's a lot of smearing towards the sides of the image.
Then things got worse. When trying to attach my Pentax 645 45mm lens to it I found that it wouldn't even connect to the adaptor. After a lengthy email exchange with the supplier they finally admitted that it DOESN'T ACTUALLY WORK with wide angle Pentax lenses!!!!!!
Guess that might have been a useful thing to have known.
Anyway, now I'm stuck with trying to get my money back.
As the saying goes...'if it looks too good to be true'........
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No username reacted to Mattias Burling in My thoughts on the Kipon Medium Format "Speedbooster"
Even crappy jpegs look decent pretty much straight from camera.
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No username reacted to Mattias Burling in My thoughts on the Kipon Medium Format "Speedbooster"
You get less crop factor than without. Its closer to medium format than full frame.
The Mamiya has x0.62 and the Sony + adapter x0.7. The Sony alone of course has x1.0.
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No username reacted to tweak in My thoughts on the Kipon Medium Format "Speedbooster"
Not buying it for this reason would be the silliest thing I've read in a while. Most speed boosters don't boost back 100% to the optics original image circle, all are just shy of it usually.
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No username reacted to Nikkor in My thoughts on the Kipon Medium Format "Speedbooster"
The Pentax 645d has a bigger cropfactor than this speedbooster. Even the most expensive backs are not really fullframe 54mm vs 56
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No username got a reaction from Mattias Burling in My thoughts on the Kipon Medium Format "Speedbooster"
Thanks for putting these tests up. It's a big help. I'd been looking at these a little while ago and after seeing your posts this week, had been tempted to pull the trigger on one in the next day or two.
However.....Looking at your last post you say that: "IMO, Wider field of view, sure it has a bigger sensor.". Do you mean that the field of view is smaller on the Sony?? Because on the official web site for the adaptor it states: "Get rid of crop factor. Get the same view like on medium format cameras".
When I looked at your last shots, it certainly looked like there was a pretty big crop factor but I thought maybe you'd just repositioned yourself BUT if there is a large crop factor it totally contradicts what they're saying on their website. Which is pretty disgraceful.
Be good to know what your thoughts on crop factor / field of view are.
Either way thanks for doing these tests. Might just have saved me wasting €500.